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1.
Am J Speech Lang Pathol ; 33(2): 800-813, 2024 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-38099824

RESUMO

PURPOSE: This study aimed to explore how well persons with anomic aphasia communicate information during discourse regarding quantity, quality, and efficiency compared to neurotypical controls, to investigate the influence of discourse tasks on informativeness and efficiency and to examine impact factors like aphasia severity and cognitive ability. METHOD: Language samples of four discourse tasks from 31 persons with anomic aphasia and 31 neurotypical controls were collected from Mandarin AphasiaBank. Correct information unit (CIU) analysis measures including the total number of CIUs, percentage of CIUs, CIUs per minute, and words per minute were calculated. Group differences and the effects of discourse tasks on informativeness and efficiency were investigated. Correlations of CIU analysis measures with aphasia severity and cognitive ability were examined. RESULTS: Persons with anomic aphasia showed lower efficiency in conveying information than controls. They underperformed controls on all CIU analysis measures when executing story narrative tasks. Discourse tasks influenced the informativeness and efficiency of both groups. Neurotypical controls delivered the greatest quantity of information most efficiently when narrating stories. Persons with anomic aphasia exhibited reduced quantity of information during procedural discourse and displayed superior information quality in sequential-picture descriptions. Discourse information may be impacted by aphasia severity and cognitive ability, with varying effects depending on the task. CONCLUSIONS: Persons with anomic aphasia are inefficient in communicating discourse messages and perform poorly on all measures in story narratives. When measuring discourse information, the effects of discourse tasks and factors like aphasia severity and cognitive ability should be considered.


Assuntos
Anomia , Afasia , Humanos , Anomia/diagnóstico , Afasia/diagnóstico , Afasia/psicologia , Idioma , Narração , Cognição
2.
Am J Speech Lang Pathol ; 32(5S): 2528-2553, 2023 10 17.
Artigo em Inglês | MEDLINE | ID: mdl-37824379

RESUMO

INTRODUCTION: Repetition priming can lead to improved naming ability in people with aphasia, but concerns have arisen from prior research about using only a single picture exemplar for each target. Specifically, it is unclear whether the observed improvements were due to learning simple correspondences between particular words and pictures rather than changes at a deeper level of lexical-semantic processing. In addition, implications for generalization after training with single exemplars were unclear. This study replicated and extended previous work to address these questions. METHOD: Five participants with chronic aphasia participated in this repeated-measures design study, which repeatedly paired words and pictures with no feedback provided. Two participants engaged in a single-exemplar condition, with a single picture exemplar of each target used for every presentation of that target. The remaining three participants engaged in a multiple-exemplar condition, with several different pictures used for each target. Half of these targets used training pictures during naming probes, whereas half did not. RESULTS: Primed items led to greater improvements in naming than items that were practiced but not primed. The data indicate that improvements may extend beyond stimulus-specific correspondences. Maintenance and generalization effects were mixed. CONCLUSIONS: These data provide further support for the efficacy of repetition priming treatment for anomia. Implications and future directions are discussed.


Assuntos
Anomia , Afasia , Humanos , Anomia/diagnóstico , Anomia/terapia , Priming de Repetição , Afasia/terapia , Aprendizagem , Semântica
3.
Am J Speech Lang Pathol ; 32(5): 1979-2020, 2023 09 11.
Artigo em Inglês | MEDLINE | ID: mdl-37433115

RESUMO

PURPOSE: This study tested the effectiveness of a modified semantic feature analysis (SFA) treatment protocol that incorporated metacognitive strategy training (MST). Regarding its restitutive component, SFA most reliably results in improved word retrieval for treated items and untreated, semantically related items, but evidence of response generalization is often small/inconsistent. Regarding its substitutive component, SFA is thought to facilitate successful communication via habituation of the SFA circumlocution strategy. However, repeated practice with SFA's strategy in the absence of direct MST may not result in independent strategy use and/or generalization. Furthermore, people with aphasia's independent use of the SFA strategy in moments of anomia is presently underreported. To address these limitations, we incorporated MST into SFA and directly measured substitutive outcomes. METHOD: Four people with aphasia participated in 24 treatment sessions of SFA + MST in a single-subject, A-B experimental design with repeated measurements. We measured word retrieval accuracy, strategy use, and explicit strategy knowledge. We calculated effect sizes to measure changes in word retrieval accuracy and strategy use and used visual inspection to assess gains in explicit strategy knowledge from pre- to posttreatment and retention. RESULTS: Participants achieved marginally small to medium effects in word retrieval accuracy for treated; untreated, semantically related; and untreated, semantically unrelated items and marginally small to large effects in independent strategy use. Explicit strategy knowledge was variable. CONCLUSIONS: Across participants, SFA + MST yielded positive changes in word retrieval accuracy or strategy use, or both. Positive changes in word retrieval accuracy were comparable to other SFA studies. Positive changes in strategy use demonstrate preliminary evidence of this treatment's ability to yield restitutive and substitutive gains. Overall, this study offers preliminary evidence of SFA + MST's effectiveness and highlights the importance of directly measuring SFA's substitutive outcomes, which showed that people with aphasia can respond to this treatment in multiple successful ways-not just improved target word production.


Assuntos
Afasia , Semântica , Humanos , Terapia da Linguagem/métodos , Afasia/terapia , Afasia/psicologia , Anomia/diagnóstico , Anomia/terapia , Anomia/psicologia , Generalização Psicológica
4.
J Alzheimers Dis ; 94(1): 393-404, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37248898

RESUMO

BACKGROUND: The Boston Naming Test (BNT) is the most widely used measure to assess anomia. However, it has been criticized for failing to differentiate the underlying cognitive process of anomia. OBJECTIVE: We validated the color-picture version of BNT (CP-BNT) in a sample with diverse neurodegenerative dementia diseases (NDDs). We also verified the differential ability of the composite indices of CP-BNT across NDDs groups. METHODS: The present study included Alzheimer's disease (n = 132), semantic variant primary progressive aphasia (svPPA, n = 53), non-svPPA (n = 33), posterior cortical atrophy (PCA, n = 35), and normal controls (n = 110). We evaluated psychometric properties of CP-BNT for the spontaneous naming (SN), the percentage of correct responses on semantic cuing and word recognition cuing (% SC, % WR). Receiver operating characteristic analysis was used to examine the discriminatory power of SN alone and the composite indices (SN, % SC, and % WR). RESULTS: The CP-BNT had sufficient internal consistency, good convergent, divergent validity, and criterion validity. Different indices of CP-BNT demonstrated distinct cognitive underpinnings. Category fluency was the strongest predictor of SN (ß= 0.46, p < 0.001). Auditory comprehension tests highly associated with % WR (Sentence comprehension: ß= 0.22, p = 0.001; Word comprehension: ß= 0.20, p = 0.001), whereas a lower visuospatial score predicted % SC (ß= -0.2, p = 0.001). Composite indices had better predictability than the SN alone when differentiating between NDDs, especially for PCA versus non-svPPA (area under the curve increased from 63.9% to 81.2%). CONCLUSION: The CP-BNT is a highly linguistically relevant test with sufficient reliability and validity. Composite indices could provide more differential information beyond SN and should be used in clinical practice.


Assuntos
Anomia , Testes de Linguagem , Doenças Neurodegenerativas , Humanos , Anomia/diagnóstico , Anomia/etiologia , População do Leste Asiático , Doenças Neurodegenerativas/complicações , Testes Neuropsicológicos , Reprodutibilidade dos Testes , Afasia Primária Progressiva/complicações , Doença de Alzheimer/complicações , Demência/complicações
5.
J Speech Lang Hear Res ; 66(5): 1718-1739, 2023 05 09.
Artigo em Inglês | MEDLINE | ID: mdl-37000934

RESUMO

PURPOSE: Item response theory (IRT) is a modern psychometric framework with several advantageous properties as compared with classical test theory. IRT has been successfully used to model performance on anomia tests in individuals with aphasia; however, all efforts to date have focused on noun production accuracy. The purpose of this study is to evaluate whether the Verb Naming Test (VNT), a prominent test of action naming, can be successfully modeled under IRT and evaluate its reliability. METHOD: We used responses on the VNT from 107 individuals with chronic aphasia from AphasiaBank. Unidimensionality and local independence, two assumptions prerequisite to IRT modeling, were evaluated using factor analysis and Yen's Q 3 statistic (Yen, 1984), respectively. The assumption of equal discrimination among test items was evaluated statistically via nested model comparisons and practically by using correlations of resulting IRT-derived scores. Finally, internal consistency, marginal and empirical reliability, and conditional reliability were evaluated. RESULTS: The VNT was found to be sufficiently unidimensional with the majority of item pairs demonstrating adequate local independence. An IRT model in which item discriminations are constrained to be equal demonstrated fit equivalent to a model in which unique discrimination parameters were estimated for each item. All forms of reliability were strong across the majority of IRT ability estimates. CONCLUSIONS: Modeling the VNT using IRT is feasible, yielding ability estimates that are both informative and reliable. Future efforts are needed to quantify the validity of the VNT under IRT and determine the extent to which it measures the same construct as other anomia tests. SUPPLEMENTAL MATERIAL: https://doi.org/10.23641/asha.22329235.


Assuntos
Anomia , Humanos , Anomia/diagnóstico , Reprodutibilidade dos Testes , Análise Fatorial , Psicometria
6.
Int J Lang Commun Disord ; 58(6): 1875-1886, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36866943

RESUMO

BACKGROUND: Patients with anomic aphasia experience difficulties in narrative processing. General discourse measures are time consuming and require necessary skills. Core lexicon analysis has been proposed as an effort-saving approach but has not been developed in Mandarin discourse. AIMS: This exploratory study was aimed (1) to apply core lexicon analysis in Mandarin patients with anomic aphasia at the discourse level and (2) to verify the problems with core words among people with anomic aphasia. METHODS & PROCEDURE: The core nouns and verbs were extracted from narrative language samples from 88 healthy participants. The production of core words for 12 anomic aphasia and 12 age- and education-matched controls were then calculated and compared. The correlation between the percentages and the Aphasia Quotients of the revised Western Aphasia Battery was analyzed as well. OUTCOMES & RESULTS: The core nouns and verbs were successfully extracted. Patients with anomic aphasia produced fewer core words than healthy people, and the percentages differed significantly in different tasks as well as word classes. There was no correlation between the core lexicon use and the severity of aphasia in patients with anomic aphasia. CONCLUSIONS & IMPLICATIONS: Core lexicon analysis may potentially serve as a clinician-friendly manner of quantifying core words produced at the discourse level in Mandarin patients with anomic aphasia. WHAT THIS PAPER ADDS: What is already known on the subject Discourse analyses in aphasia assessment and treatment have increasingly garnered attention. Core lexicon analysis based on English AphasiaBank has been reported in recent years. It is correlated with microlinguistic and macrolinguistic measures in aphasia narratives. Nevertheless, the application based on Mandarin AphasiaBank is still under development in healthy individuals and patients with anomic aphasia. What this paper adds to existing knowledge A Mandarin core lexicon set was developed for different tasks. The feasibility of core lexicon analysis to evaluate the corpus of patients with anomic aphasia was preliminarily discussed and the speech performance of patients and healthy people was then compared to provide a reference for the evaluation and treatment of clinical aphasia corpus. What are the potential or actual clinical implications of this work? The purpose of this exploratory study was to consider the potential use of core lexicon analysis to evaluate core word production in narrative discourse. Moreover, normative and aphasia data were provided for comparison to develop clinical use for Mandarin patients with anomic aphasia.


Assuntos
Anomia , Afasia , Humanos , Anomia/diagnóstico , Afasia/diagnóstico , Afasia/terapia , Idioma , Fala , Testes de Linguagem
7.
Am J Speech Lang Pathol ; 31(1): 48-66, 2022 01 18.
Artigo em Inglês | MEDLINE | ID: mdl-34029115

RESUMO

PURPOSE: Repetition priming has been suggested as a method for targeting implicit processes in anomia treatment. Prior studies have used masked priming for this purpose. This study extends that work with visible primes, a more clinically feasible approach. METHOD: This study used a single-subject design across three participants with aphasia. Treatment involved repeated exposure to identity primes (trained condition) or sham primes (untrained condition) paired with pictures. Analyses assessed acquisition effects for trained items and untrained items that were seen during the training period, generalization to untrained items that had not been seen, and generalization to broader language skills, immediately and 3 months post-treatment. RESULTS: All participants improved in naming trained items immediately after treatment, with greater improvements for trained than for untrained items. All participants maintained some degree of improvement on trained items 3 months post-treatment, although the degree differed across participants. Inconsistent generalization occurred to unexposed items. Improvements were noted in some areas of broader language ability, although these varied. CONCLUSIONS: These data suggest a repetition priming treatment paradigm may increase naming accuracy for individuals with anomia and may benefit other aspects of language. Participant factors may have influenced response to treatment. Directions for future investigation are discussed.


Assuntos
Anomia , Afasia , Anomia/diagnóstico , Anomia/terapia , Afasia/terapia , Humanos , Terapia da Linguagem/métodos , Priming de Repetição , Semântica
8.
Am J Speech Lang Pathol ; 31(1): 3-11, 2022 01 18.
Artigo em Inglês | MEDLINE | ID: mdl-34310203

RESUMO

PURPOSE: Anomia, or difficulty with naming and word finding, is a pervasive deficit among individuals with aphasia. There is an extensive literature on the mechanisms underlying anomia and on approaches to treatment, but very little is known about the subjective experience of anomia during day-to-day life. METHOD: As part of a larger testing battery, 53 adults with poststroke aphasia took part in a novel, structured interview that included an open-ended question about the general experience of anomia: "Do you ever know what you want to say, but you can't say it out loud? Please describe that feeling." Video-recorded interview responses were transcribed and analyzed using thematic analysis, an iterative, data-driven process that categorizes interview data into common themes. RESULTS: Five main themes emerged among the data from 37 participants who produced adequate responses for use in thematic analysis: strategies to cope with or compensate for anomia, comments on awareness of the level of breakdown (e.g., "I have an idea, but can't get the right words"), negative emotions, impact on relationships, and changes in frequency over time. CONCLUSIONS: Participants showed strong awareness of anomia and its implications, demonstrating an ability to describe their language breakdown, identify relevant strategies to compensate and/or cope, and acknowledge the impact of anomia on their emotions and social interactions. This patient perspective may serve as a valuable supplement to information typically gained via objective language assessments. Clinicians and researchers may wish to consider incorporating similar subjective measures during assessment and treatment planning. Supplemental Material https://doi.org/10.23641/asha.15032643.


Assuntos
Afasia , Adulto , Anomia/diagnóstico , Anomia/etiologia , Anomia/psicologia , Afasia/diagnóstico , Afasia/etiologia , Afasia/psicologia , Humanos , Idioma , Terapia da Linguagem
9.
Sci Rep ; 11(1): 18572, 2021 09 17.
Artigo em Inglês | MEDLINE | ID: mdl-34535718

RESUMO

Stroke is a leading cause of disability, and language impairments (aphasia) after stroke are both common and particularly feared. Most stroke survivors with aphasia exhibit anomia (difficulties with naming common objects), but while many therapeutic interventions for anomia have been proposed, treatment effects are typically much larger in some patients than others. Here, we asked whether that variation might be more systematic, and even predictable, than previously thought. 18 patients, each at least 6 months after left hemisphere stroke, engaged in a computerised treatment for their anomia over a 6-week period. Using only: (a) the patients' initial accuracy when naming (to-be) trained items; (b) the hours of therapy that they devoted to the therapy; and (c) whole-brain lesion location data, derived from structural MRI; we developed Partial Least Squares regression models to predict the patients' improvements on treated items, and tested them in cross-validation. Somewhat surprisingly, the best model included only lesion location data and the hours of therapy undertaken. In cross-validation, this model significantly out-performed the null model, in which the prediction for each patient was simply the mean treatment effect of the group. This model also made promisingly accurate predictions in absolute terms: the correlation between empirical and predicted treatment response was 0.62 (95% CI 0.27, 0.95). Our results indicate that individuals' variation in response to anomia treatment are, at least somewhat, systematic and predictable, from the interaction between where and how much lesion damage they have suffered, and the time they devoted to the therapy.


Assuntos
Anomia/etiologia , Anomia/terapia , Acidente Vascular Cerebral/complicações , Anomia/diagnóstico , Encéfalo/patologia , Gerenciamento Clínico , Feminino , Humanos , Masculino , Prognóstico
10.
Semin Speech Lang ; 42(3): 256-274, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-34261167

RESUMO

This article reviews advanced statistical techniques for measuring impairments in object naming, particularly in the context of stroke-induced aphasia. Traditional testing strategies can be challenged by the multifaceted nature of impairments that arise due to the complex relationships between localized brain damage and disruption to the cognitive processes required for successful object naming. Cognitive psychometric models can combine response-type analysis with item-response theory to yield accurate estimates of multiple abilities using data collected from a single task. The models also provide insights about how the test items can be challenging in different ways. Although more work is needed to fully optimize their clinical utility in practice, these formal concepts can guide thoughtful selection of stimuli used in treatment or assessment, as well as providing a framework to interpret response-type data.


Assuntos
Anomia , Afasia , Anomia/diagnóstico , Anomia/terapia , Afasia/diagnóstico , Afasia/terapia , Cognição , Humanos , Psicolinguística , Psicometria , Semântica
11.
J Alzheimers Dis ; 81(4): 1763-1779, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33998546

RESUMO

BACKGROUND: Auditory naming tests are superior to visual confrontation naming tests in revealing word-finding difficulties in many neuropathological conditions. OBJECTIVE: To delineate characteristics of auditory naming most likely to reveal anomia in patients with dementia, and possibly improve diagnostic utility, we evaluated a large sample of patients referred with memory impairment complaints. METHODS: Patients with dementia (N = 733) or other cognitive impairments and normal individuals (N = 69) were evaluated for frequency of impairment on variables of the Auditory Naming Test (ANT) of Hamberger & Seidel versus the Boston Naming Test (BNT). RESULTS: Naming impairment occurred more frequently using the ANT total score (φ= 0.41) or ANT tip-of-the tongue score (TOT; φ= 0.19) but not ANT mean response time compared to the BNT in patients with dementia (p < 0.001). Significantly more patients were impaired on ANT variables than on the BNT in Alzheimer's disease (AD), vascular dementia (VaD), mixed AD/VaD, and multiple domain mild cognitive impairment (mMCI) but not in other dementias or amnestic MCI (aMCI). This differential performance of patients on auditory versus visual naming tasks was most pronounced in older, well-educated, male patients with the least cognitive impairment. Impaired verbal comprehension was not contributory. Inclusion of an ANT index score increased sensitivity in the dementia sample (92%). Poor specificity (41%) may be secondary to the inherent limitation of using the BNT as a control variable. CONCLUSION: The ANT index score adds diagnostic utility to the assessment of naming difficulties in patients with suspected dementia.


Assuntos
Anomia/diagnóstico , Disfunção Cognitiva/complicações , Demência/complicações , Idoso , Idoso de 80 Anos ou mais , Anomia/complicações , Anomia/psicologia , Disfunção Cognitiva/psicologia , Demência/psicologia , Feminino , Humanos , Testes de Linguagem , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos
12.
Am J Speech Lang Pathol ; 30(1S): 441-454, 2021 02 11.
Artigo em Inglês | MEDLINE | ID: mdl-32628509

RESUMO

Background Anomia treatments typically focus on single word retrieval, although the ultimate goal of treatment is to improve functional communication at the level of discourse in daily situations. Aims The focus of this study was to investigate the impact of two effective anomia treatments on discourse production as measured by a story retell task. Method and Procedure Fifty-seven people with aphasia were randomized to receive either a phoneme-based treatment, Phonomotor Therapy (PMT; 28 participants), or a lexical-semantic treatment, Semantic Feature Analysis (SFA; 29 participants). Groups were matched for age, aphasia severity, education, and years post onset. All received 56-60 hr of treatment in a massed treatment schedule. Therapy was delivered for a total of 8-10 hr/week over the course of 6-7 weeks. All participants completed testing 1 week prior to treatment (A1), immediately following treatment (A2), and again 3 months later (A3). Discourse was analyzed through the percentage of correct information units at each time point. Outcomes and Results Both groups showed nonsignificant improvements from pretreatment to immediately posttreatment. The PMT group showed significant improvement 3 months posttreatment, while the SFA group returned to near-baseline levels. Conclusion These results add to our understanding of the effects of both PMT and SFA. Future research should address understanding variability in discourse outcomes across studies and the effects of aphasia severity and individual participant and treatment factors on treatment outcomes for both of these approaches.


Assuntos
Afasia , Semântica , Anomia/diagnóstico , Anomia/terapia , Afasia/diagnóstico , Afasia/terapia , Humanos , Terapia da Linguagem , Resultado do Tratamento
13.
J Stroke Cerebrovasc Dis ; 29(10): 105161, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32912538

RESUMO

Gerstmann syndrome is defined as a tetrad including agraphia, acalculia, finger agnosia, and right-left disorientation. In the case studies presented in the literature, it has been reported that Gerstmann syndrome usually appears as an incomplete tetrad of symptoms or accompanied by cognitive deficits including aphasia, alexia, apraxia and some perceptual disorders. Here, we present of the patient with left angular and supramarginal gyrus infarction affecting the parietal lobe. In addition to the symptoms mentioned above, the patient had alexia and anomic aphasia as well. We discussed the clinic appearance and reviewed the current literature.


Assuntos
Agrafia/etiologia , Anomia/etiologia , Infarto Cerebral/complicações , Discalculia/etiologia , Dislexia/etiologia , Síndrome de Gerstmann/etiologia , Lobo Parietal/irrigação sanguínea , Agrafia/diagnóstico , Agrafia/psicologia , Anomia/diagnóstico , Anomia/psicologia , Infarto Cerebral/diagnóstico , Infarto Cerebral/psicologia , Discalculia/diagnóstico , Discalculia/psicologia , Dislexia/diagnóstico , Dislexia/psicologia , Síndrome de Gerstmann/diagnóstico , Síndrome de Gerstmann/psicologia , Humanos , Masculino , Pessoa de Meia-Idade
14.
J Speech Lang Hear Res ; 63(1): 163-172, 2020 01 22.
Artigo em Inglês | MEDLINE | ID: mdl-31851861

RESUMO

Purpose The purpose of this study was to verify the equivalence of 2 alternate test forms with nonoverlapping content generated by an item response theory (IRT)-based computer-adaptive test (CAT). The Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996)was utilized as an item bank in a prospective, independent sample of persons with aphasia. Method Two alternate CAT short forms of the PNT were administered to a sample of 25 persons with aphasia who were at least 6 months postonset and received no treatment for 2 weeks before or during the study. The 1st session included administration of a 30-item PNT-CAT, and the 2nd session, conducted approximately 2 weeks later, included a variable-length PNT-CAT that excluded items administered in the 1st session and terminated when the modeled precision of the ability estimate was equal to or greater than the value obtained in the 1st session. The ability estimates were analyzed in a Bayesian framework. Results The 2 test versions correlated highly (r = .89) and obtained means and standard deviations that were not credibly different from one another. The correlation and error variance between the 2 test versions were well predicted by the IRT measurement model. Discussion The results suggest that IRT-based CAT alternate forms may be productively used in the assessment of anomia. IRT methods offer advantages for the efficient and sensitive measurement of change over time. Future work should consider the potential impact of differential item functioning due to person factors and intervention-specific effects, as well as expanding the item bank to maximize the clinical utility of the test. Supplemental Material https://doi.org/10.23641/asha.11368040.


Assuntos
Anomia/diagnóstico , Afasia/diagnóstico , Diagnóstico por Computador/normas , Testes de Linguagem/normas , Idoso , Teorema de Bayes , Diagnóstico por Computador/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
15.
J Speech Lang Hear Res ; 62(6): 1724-1738, 2019 06 19.
Artigo em Inglês | MEDLINE | ID: mdl-31158037

RESUMO

Purpose In this study, we investigated the agreement between the 175-item Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996 ) and a 30-item computer adaptive PNT (PNT-CAT; Fergadiotis, Kellough, & Hula, 2015 ; Hula, Kellough, & Fergadiotis, 2015 ) created using item response theory (IRT) methods. Method The full PNT and the PNT-CAT were administered to 47 participants with aphasia in counterbalanced order. Latent trait-naming ability estimates for the 2 PNT versions were analyzed in a Bayesian framework, and the agreement between them was evaluated using correlation and measures of constant, variable, and total error. We also evaluated the extent to which individual pairwise differences were credibly greater than 0 and whether the IRT measurement model provided an adequate indication of the precision of individual score estimates. Results The agreement between the PNT and the PNT-CAT was strong, as indicated by high correlation ( r = .95, 95% CI [.92, .97]), negligible bias, and low variable and total error. The number of statistically robust pairwise score differences did not credibly exceed the Type I error rate, and the precision of individual score estimates was reasonably well predicted by the IRT model. Discussion The strong agreement between the full PNT and the PNT-CAT suggests that the latter is a suitable measurement of anomia in group studies. The relatively robust estimates of score precision also suggest that the PNT-CAT can be useful for the clinical assessment of anomia in individual cases. Finally, the IRT methods used to construct the PNT-CAT provide a framework for additional development to further reduce measurement error. Supplemental Material https://doi.org/10.23641/asha.8202176.


Assuntos
Anomia/diagnóstico , Afasia/diagnóstico , Diagnóstico por Computador/métodos , Testes de Linguagem/normas , Adulto , Idoso , Idoso de 80 Anos ou mais , Teorema de Bayes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes
16.
Harefuah ; 157(9): 570-575, 2018 Sep.
Artigo em Hebraico | MEDLINE | ID: mdl-30221856

RESUMO

INTRODUCTION: The lexical retrieval model describes the process of naming - from the level of an abstract concept representation to the production of the word. Lexical retrieval includes several distinct levels. A deficit in any of these levels causes anomia, a naming deficit, and deficits in different levels cause different types of anomia. AIMS: To examine whether the theoretical model can be applied in the clinic. Namely, whether it is possible to identify, for a specific patient, the exact impaired lexical retrieval level, and to show that different patients are impaired in different levels. METHODS: The performance of 24 participants with aphasia, with lexical retrieval deficits, were analyzed. The analysis included performance on a naming test - including analysis of error types and of the effects that modulate naming errors. We also analyzed the performance in other language tasks that examine the different levels of lexical retrieval, including tasks that do not involve naming. RESULTS: Different types of anomia were found for the different participants. The various types of anomia are reflected in different sorts of naming errors, in different effects that modulate naming errors, and in different performance patterns in the other language tasks. CONCLUSIONS: The theoretical model of lexical retrieval can underpin descriptions of clinical phenomena. The findings support the view that the relations between theory and clinic are bidirectional - theories constitute an anchor for the description of clinical phenomena, and clinical findings can support, or refute, theory. DISCUSSION: The distinction between the different types of anomia is important for choosing the appropriate treatment for each patient.


Assuntos
Anomia , Afasia , Anomia/diagnóstico , Afasia/diagnóstico , Humanos , Idioma , Semântica
17.
Am J Speech Lang Pathol ; 27(1S): 379-391, 2018 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-29497750

RESUMO

Purpose: This study explored the relationship between anomia and verbal short-term memory (STM) in the context of an interactive activation language processing model. Method: Twenty-four individuals with aphasia and reduced STM spans (i.e., impaired immediate serial recall of words) completed a picture-naming task and a word pair repetition task (a measure of verbal STM). Correlations between verbal STM and word retrieval errors made on the picture-naming task were examined. Results: A significant positive correlation between naming accuracy and verbal span length was found. More intricate verbal STM analyses examined the relationship between picture-naming error types (i.e., semantic vs. phonological) and 2 measures of verbal STM: (a) location of errors on the word pair repetition task and (b) imageability and frequency effects on the word pair repetition task. Results indicated that, as phonological word retrieval errors (relative to semantic) increase, bias toward correct repetition of high-imageability words increases. Conclusions: Results suggest that word retrieval and verbal STM tasks likely rely on a partially shared temporary linguistic activation process.


Assuntos
Anomia/psicologia , Memória de Curto Prazo , Fonética , Semântica , Comportamento Verbal , Idoso , Anomia/diagnóstico , Compreensão , Feminino , Humanos , Testes de Linguagem , Masculino , Pessoa de Meia-Idade
18.
Am J Speech Lang Pathol ; 27(1S): 406-422, 2018 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-29497752

RESUMO

Purpose: The purpose of this study was to examine the relationship between picture naming performance and the ability to communicate the gist, or essential elements, of a story. We also sought to determine if this relationship varied according to Western Aphasia Battery-Revised (WAB-R; Kertesz, 2007) aphasia subtype. Method: Demographic information, test scores, and transcripts of 258 individuals with aphasia completing 3 narrative tasks were retrieved from the AphasiaBank database. Narratives were subjected to a main concept analysis to determine gist production. A correlation analysis was used to investigate the relationship between naming scores and main concept production for the whole group of persons with aphasia and for WAB-R subtypes separately. Results: We found strong correlations between naming test scores and narrative gist production for the large sample of persons with aphasia. However, the strength of the correlations varied by WAB-R subtype. Conclusions: Picture naming may accurately predict gist production for individuals with Broca's and Wernicke's aphasia, but not for other WAB-R subtypes. Given the current reprioritization of outcome measurement, picture naming may not be an appropriate surrogate measure for functional communication for all persons with aphasia. Supplemental Materials: https://doi.org/10.23641/asha.5851848.


Assuntos
Anomia/psicologia , Afasia de Broca/psicologia , Afasia de Condução/psicologia , Afasia de Wernicke/psicologia , Compreensão , Idioma , Idoso , Idoso de 80 Anos ou mais , Anomia/diagnóstico , Afasia de Broca/diagnóstico , Afasia de Condução/diagnóstico , Afasia de Wernicke/diagnóstico , Bases de Dados Factuais , Feminino , Humanos , Testes de Linguagem , Masculino , Pessoa de Meia-Idade , Estimulação Luminosa , Índice de Gravidade de Doença
19.
Am J Speech Lang Pathol ; 27(1S): 464-476, 2018 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-29497756

RESUMO

Purpose: Social models of aphasia rehabilitation emphasize the importance of supporting identity renegotiation, which can be accomplished in part through personal narrative construction. The purpose of this study was to examine the experiences of persons who had engaged in a project to coconstruct personal narratives about life with aphasia. Method: Qualitative interviews were conducted with 3 participants with aphasia who completed a 4-week personal narrative coconstruction project, which included preadministration and postadministration of the Communication Confidence Rating Scale for Aphasia (Cherney & Babbitt, 2011). Results were analyzed using interpretative phenomenological analysis. Results: Three themes were revealed: (a) More than a story: It changed my life validated the idea that the narrative coconstruction process supported a positive view of identity; (b) A positive experience captured the participants' enjoyment in coconstructing and sharing their story; (c) Hope engendered by the coconstruction experience empowered participants with new levels of confidence not only in their communication skills but also in themselves. Conclusions: This study provided insight into the experience of coconstructing personal narratives using a structured protocol. Participants experienced the project as a positive, meaningful opportunity to actively contemplate their life and look forward. The study has implications for clinicians considering support of identity renegotiation in aphasia rehabilitation.


Assuntos
Anomia/reabilitação , Afasia de Broca/reabilitação , Idioma , Terapia Narrativa/métodos , Qualidade de Vida , Idoso , Anomia/diagnóstico , Anomia/psicologia , Afasia de Broca/diagnóstico , Afasia de Broca/psicologia , Efeitos Psicossociais da Doença , Humanos , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade , Narração , Poder Psicológico , Pesquisa Qualitativa , Recuperação de Função Fisiológica , Autoimagem , Comportamento Social , Fatores de Tempo , Resultado do Tratamento
20.
Am J Speech Lang Pathol ; 27(1S): 454-463, 2018 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-29497755

RESUMO

Purpose: Current computer technologies permit independent practice for people with cognitive-communicative disorders. Previous research has investigated compliance rates and outcome changes but not treatment fidelity per se during practice. Our aim was to examine adherence to procedures (treatment fidelity) and accuracy while persons with aphasia independently practiced word production using interactive, multimodal, user-controlled, word-level icons on computers. Method: Four persons with aphasia independently practiced single-word production after stimulation via user-initiated interactions in 3 conditions: (I) auditory stimulus with static representational drawing; (II) auditory stimulus with synchronized articulation video; and (III) users' choice between the 2 prior conditions. Sessions were video-recorded for subsequent analysis, which established emergently refined behavioral taxonomies using an iterative, mixed-methods approach. Results: In independent practice, users only sometimes adhere to modeled behaviors, other times improvising novel behaviors. The latter sometimes co-occurred with successful productions. Differences in success rates were noted between Conditions I and II across behaviors with Condition II generally favored. In Condition III, participants tended to choose the stimulus that resulted in highest success rates. Conclusions: During independent practice with technology, persons with aphasia do not necessarily comply with clinicians' practice instructions, and treatment fidelity does not determine success. Autonomy and choice in practice may reveal unanticipated dimensions for computerized aphasia treatment.


Assuntos
Anomia/reabilitação , Afasia de Broca/reabilitação , Afasia de Wernicke/reabilitação , Terapia da Linguagem/métodos , Cooperação do Paciente , Autonomia Pessoal , Fala , Terapia Assistida por Computador/métodos , Estimulação Acústica , Idoso , Anomia/diagnóstico , Anomia/psicologia , Afasia de Broca/diagnóstico , Afasia de Broca/psicologia , Afasia de Wernicke/diagnóstico , Afasia de Wernicke/psicologia , Percepção Auditiva , Comportamento de Escolha , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estimulação Luminosa , Projetos Piloto , Análise e Desempenho de Tarefas , Resultado do Tratamento , Gravação em Vídeo , Percepção Visual
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